Locomotive stoker



Aug. 15, 1939. c. M. STEIN 2,169,534

- LOCQMOTIVE STOKER Filed July 14, 1936 2 Sheets-Sheet 2 3 'n n n' n 73 74 1.3

u u U INVENTOR. C72 ar/es/Var/eS/ak 7 BY nglm TTORNEY3 Patented Aug. 15, 1939 UNITED STATES PATENT OFFICE The Standard Stoker N. Y., a corporation 0 Application July 14,

3 Claims.

My invention relates to: stokers for locomotives and particularly to stokers for locomotives of the switcher or industrial type wherein the fuel bin is carried by the locomotive.

An object of my invention is to provide a com pact and efficient stoker especially adaptable to locomotives of the type described above.

Another object of my invention resides in the novel construction of the stoker and associated parts of the locomotive and the novel arrangement and combination thereof.

Other and further objects and advantages of the invention will appear from the following de-' scription taken in connection with the accompanying drawings, in which Fig. 1 is a vertical longitudinal central section through the rearward portion of the locomotive with the stoker applied thereto and shown in similar section;

Fig. 2 is a rear end elevation of the fuel bin of the locomotive with the stoker applied thereto and shown in similar elevation;

Fig. 3 is a section taken on the line 33 of Fig. 1;

Fig. 4 is a section taken Fig. 2;

Fig. 5 is a. vertical longitudinal central section through the rearward portion of the locomotive, showing a modified construction thereof and a modified form of stoker applied thereto;

Fig. 6 is a top plan View of the modified form of stoker, the stoker engine and driving con.- nection therebetween, a portion of the locomotive boiler being shown in section and the hopper being removed; and

Fig. 7 is a rear end elevation of the modified form of fuel bin of the locomotive with the stoker applied thereto and shown in similar elevation.

Referring now to the form of the invention shown in Figures 1 to 4, inclusive, a locomotive is indicated generally by the numeral l9, comprising a frame H, a fire-box l2 having a backwall LB with a firing opening l4 therethrough, and a cab deck l5 extending rearwardly from the backwall 13 below the level of the firing opening M' and above the frame ll. Transversely extending on the line d4 of plate members l6 support the cab deck l5 from I Company, 1110., New York, 1 Delaware 1936, Serial No. 90,477

an inclined position on the plate-like member 58 and is rigidly secured thereto by any suitable means, as by bolts 2| extending through the feet 20 and the member I8.

A fuel bin 22 extends transversely across. the rearward end of the locomotive and is. provided with side slope sheets 23 sloping downwardly from the sides of the fuel bin 22 and spaced apart at their lower ends to form a discharge opening 2% through which fuel will drop by gravity into the open mouth trough l9. A sealing ring 25 forms a fuel passage between the discharge open-- ing 26 of the fuel bin 22 and the open mouth of the trough iii. The upper edge of the sealing ring 25 is provided with a horizontal outwardly extending flange 26 cooperating with the inturned horizontal lower end portions U of the slope sheets 23 to form guideways 28. The flange 25 of the sealing ring 25 extends forward of the front wall 29 of the fuel bin and cooperates with the cover 30 to form continuations of the guideways 28. In the guideways 28 are mounted slide plates 3| arranged when moved to the rearmost position to form a closure for the discharge opening 24. The size of the discharge opening 24 can be controlledby moving the slide plates a desired distance from the rearmost position, thus regulating the amount of fuel that passes therethrough into the trough IS.

The front wall 32 of the trough I9 is provided with a discharge opening 33 and a tubular conduit 34 registering with the opening 33 is rigidly secured to the front wall 32 and extends forwardly and upwardly toward the firebox backwall l3. A riser conduit section 35 is telescopically connected at its rearward lower end to the forward end of the tubular conduit 34 and at its upper end communicates with the firing opening it. 'Ihe'riser conduit 35 is rigidly supported from the firebox backwall l3 by the brackets 36 and 3?. The telescopic connection referred to above permits convenient removal of the trough iii and tubular conduit, by simply removing the bolts 2| and sliding the trough l9 rearwardly along the plate-like member I8. Since the riser conduit 35 is rigidly supported by the firebox backwall I3, it will move as contraction and expansion of the boiler occurs. The relative movement between the riser conduit 35 and the rigidly mounted trough l9 and tubular conduit 3% is u compensated by the telescopic connection.

The fuel is conveyed forwardly through the trough l9 and tubular conduit 34' by the screw conveyor 38 which delivers the fuel to the riser conduit 35 and forces it therethrough delivering it into the firing opening H. The m1 from the [riser conduit 35 adjacent its discharge end and is provided with jet openings 42' through which fluid under pressure issues for projecting fuel from the plate 39 and scattering it in aerial paths over the fire in the firebox l2.

A crusher 43 is mounted in the trough IS on the front wall 32 thereof over the screw conveyor 38 with which it cooperates to break up the large-lumps of fuel to a size suitable for firing. The movable hinged portion 44 of the cover 30 and the door 45 for, the opening in the front wall 29 of the fuel bin 22 permit access to the crusher 43 for purpose of removing clogs or for any other purpose, The hinged portion 44 when swung upward about its hinge also provides for access to the slide plates 3|.

The motive power for driving the conveyor screw 38 is provided by an engine 46 mounted at one side of the trough IS on the deck l5. A speed reducing gear case 41 is preferably formed integral with the rear wall of theetrough |9 and with its cover 48 encloses the gear 49 and pinion 58. A shaft 5| from the gear 49 extends into the trough IQ for driving the screw 38 and a shaft 52 from the pinion extends forwardly through the case 41 where it is connected by the universal connection 53 to the drive shaft 54 of the engine The universal connection 53 is necessary since the drive shaft 54 of the engine is out of alignment with the gear shaft 5| and the pinion shaft 52.

In order to avoid unnecessary repetition, only these features of the modified form of the invention shown in Figures 5, 6 and 7 that distinguish from the form shown in Figures 1, 2, 3 and 4 will be described. The fuel bin 60; .of the modified construction is not provided with side slope sheets asis the form of construction first described. The fuel bin 60 is therefore not'self'cleaning but it does provide a reserve source of fuel that can be hand fired. In this form of construction slide plates, such as the slide plates 3| of the preferred form of construction; are dispensed with as well as the cover 30 which in the preferred form constitutes one element of the guideway for the slide plates. w a

In the modified form of the invention, the rear portion 6| of the trough 62 is disposed horizontally on the cab'deck 63 while the forward por-- tion 54 is upturned. The trough 62 is removable from the rear'of the locomotive. Raising the door 16 for the opening in the front wall 11 of the bin 63, permits the crusher 43' and the wall pass through the opening upon rearward with- 7 dra'wal of the trough. The fuel conveying means comprisesa short screw section 65 in the horizontal portion 6| and a conveyor screw 66 in the upturned portion 64, connected together by 'a' coupling 15. In this construction since the shafts I 12 and 14 are in approximate horizontal alignthrough and a cab deck extending rearwardly I from the backwall and a fuel bin supported on the rearward end of the cab deck and spaced from said backwall, a trough detachably mounted on the rearward end of the cab deck for receiving fuel by gravity from said fuel bin, a conduit extending forwardly from said trough to said firing opening, conveying means in said trough and conduit for advancing fuel therethrough to the firebox, an engine for driving said conveying means mounted at one side of said trough below the fuel bin, a gear casing at the rear of and formed with said trough and gearing in said casing .operatively connecting said engine with the conveying means, said trough and gear casing being separable from said bin and removable rearwardly from the rearward end of the 1000-" motive independently of movement of said bin 2. In a locomotive having a firebox provided with a backwall having a firing openin therethrough and a cab deck extending rearwardly from the backwall and a fuel bin supported on the rearward end of said cab deck and spaced from the firebox backwall, a compartment formed in the bottom of said bin, a fuel conveyor including a trough portion detachably mounted in said compartmentand arranged to receive fuel from said bin, a conduit extending forwardly from said trough to said firing opening and conveying means in said trough and conduit for advancing thereof disposed exteriorly of said compartment and means for operating said conveying means including gearing housed in said gear casing, said trough and gear casing being separable from said bin and removable rearwardly from the rearward end of the locomotive independently of movement of said bin.

3. In a locomotive having'a firebox provided with a backwall'having a firing opening theree through and a cab deck extending rearwardly from the backwall and a fuel bin supported on. the rearward end of said cab deck and spaced from the firebox backwalLsaid cab deck being provided in its rearward end intermediate the sides thereof with a recess, a' fuel conveyor arranged toreceive'fuel from. said bin and leading forwardly to said firing openingsaid'fuel conveyor including a rearward conduit portion rigidly and detachably mounted on the locomotive with respect to said cab deck, said rearward conduit portion extending into said cab deck recess and being removable rearwardly from the rearward end of the locomotive independently of movement 'of said bin, and a forward conduit portion rigidly fastened to the firebox backwall and a screw conveyor for advancing fuel through said conduit portions, said conduit portions being telescopically connected at their adjacent ends.

CHARLES MARIE STEIN. 

